Hi Group with thanks to Bill and others trying to point me,

and to other having trouble getting Sprog II to communicate even if
you are sure you have windows and Sprog port settings right.

I finally got Sprog working! Perhaps I missed something I should
have read earlier. Don't know!

I went to the Sprog CD and opened the PDF folder and found some tech
stuff re: commands that Sprog could use. Read this and wondered???

Next I opened Window Hyper Terminal and connected it to Com 5 (Where
my Sprog is connected). I tried sending some commands and the LED
flased each time I sent a character. I had Sprog's command monitor
window open on my second monitor and never saw a response from
Sprog.

Next I opened Decoder Pro and clicked on SPROG then clicked on "Sprog
II firmware update". (had been to the web site and had the impression
that none were available so hadn't tried this before.)

With the update window open click CONNECT.
Click SET SPROG MODE
click Set command station mode.
Close this window.

On Decoder Pro click tools
click power control
on the power on/off window click power on and see the Sprog turn on
track power. (its power LED will flash continously)

More info re port settings: In Windows Control Panel, System,
hardware, device manager click "ports (COM & LPT)" and right click
the Sprog connection then click "properties".

click port settings.
This is what you could (should) have:
Baud 9600
data bits 8
parity None
stop biuts 1
flow control None

Click advanced then click defaults
Here is where you can change the serial port to any unused port your
system will allow.
Note: Have your modem open so its port is used or else it will show
available. If you
put Sprog on it the modem will not work.